TIMELINES OF VACCINE PREVENTABLE ILLNESSES

The Autism and Developmental Disabilities Monitoring Network was created in 2000 by the CDC in order to get more accurate Autism Spectrum Disorder prevalence statistics than were previously possible.

The national prevalence statistics are an average of the local prevalence statistics.

2000: 6 States Monitored: Arizona, Georgia, Maryland, New Jersey, South Carolina, West Virginia. Average ASD prevalence across all six sites was 6.7 per 1,000 children aged 8 years.

2002: 14 States Monitored: Alabama, Arizona, Arkansas, Colorado, Georgia, Maryland, Missouri, New Jersey, North Carolina, Pennsylvania, South Carolina, Utah, West Virginia, Wisconsin. Average ASD prevalence across all fourteen sites was 6.6 per 1,000 (one in 152) children aged 8 years.

2006: 11 States Monitored: Alabama, Arizona, Colorado, Florida, Georgia, Maryland, Missouri, North Carolina, Pennsylvania, South Carolina, Wisconsin. Average ASD prevalence across all eleven sites was 9.0 per 1,000 (one in 110) children aged 8 years.

2008: 14 States Monitored: Alabama, Arizona, Arkansas, Colorado, Florida, Maryland, Missouri, New Jersey, North Carolina, Pennsylvania, South Carolina, Utah, West Virginia, Wisconsin. Average ASD Prevalence across all fourteen sites was 11.3 per 1,000 (one in 88) children aged 8 years.

2010: 11 States Monitored: Alabama, Arizona, Arkansas, Colorado, Georgia, Maryland, Missouri, New Jersey, North Carolina, Utah, Wisconsin. Average ASD prevalence across all eleven sites was 14.7 per 1,000 (one in 68) children aged 8 years.